The Mercedes E class was re-engineered for the 2007 model year with an emphasis on improving occupant protection in side impact crashes. In the Institute’s initial test of a 2007 model, the car was rated Acceptable, primarily because of high forces recorded on the driver dummy's torso.

Beginning with 2007 models manufactured after May 2007, changes to the front door trim panels were made to further improve occupant protection in side impact crashes, so a test of the improved design was conducted (note: information about when a specific vehicle was manufactured is on the certification label typically affixed to the car on or near the driver door). This test showed some reduction of the forces on the driver dummy's torso, but not enough to change the torso injury rating or the overall rating. Therefore the ratings for both vehicles are based on both tests.

Injury measures

Driver — In both tests, measures taken from the dummy indicate that rib fractures and a fracture of the pelvis would be possible in a crash of this severity. In the first test, internal organ injuries would also be possible.

Passenger — In both tests, measures taken from the dummy indicate a low risk of any significant injuries in a crash of this severity.

Head protection

Driver — The dummy’s head was protected from being hit by any hard structures, including the intruding barrier, by a side curtain airbag that deployed from the roof and a side airbag that deployed from the seat.

Passenger — The dummy’s head was protected from being hit by any hard structures, including the intruding barrier, by a side curtain airbag that deployed from the roof and a side airbag that deployed from the door.